Acacia decurrens (Green Wattle Acacia)

Acacia decurrens (Green Wattle Acacia) is a fast-growing evergreen tree that belongs to the Fabaceae family. It is native to southeastern Australia and is widely cultivated in many parts of the world, including Europe, Africa, Asia, and South America. 

The tree can reach a height of up to 30 meters (100 feet) and has a spread of around 12 meters (40 feet). Its bark is dark brown or black, and its leaves are dark green, feathery, and about 10-20 cm long, with small leaflets that give them a fern-like appearance. The flowers are small, yellow, and fragrant, and they bloom in clusters from late winter to early spring. The fruit is a flat, brown pod that contains several small, black seeds. 

Acacia decurrens is often used for erosion control, reforestation, and as a source of timber and pulpwood. It is also used for ornamental purposes, and its flowers are a source of nectar for bees and other insects. Additionally, the tree has been used in traditional medicine for its antibacterial, antifungal, and antiviral properties.